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The best way to go about this is to keep the URLs with the language in the structure. Redirect (301) the ones that don't have it to the ones that do. However, it sounds like that causes a problem. If the above isn't a possibility, use a canonical from the non-language URL to the one with it. Then do your HREFLANG in sitemaps, and only use the URLs with the language tag in the sitemaps. You can also do the coding on the page, just make sure the HREFLANG tags are not on the non-language pages. Example URL: http://www.test.com/boeken would have a canonical tag that points to http://www.test.com/nl/boeken Only http://www.test.com/nl/boeken is listed in the sitemaps OR Only http://www.test.com/nl/boeken has HREFLANG tags. http://www.test.com/boeken would only have the canonical. That should solve your problem.